Concrete-mixer.



I. K. SHERO.

UONCRETE MIXER.

APPLICATION FILED NOV. 23, 1910.

Patented Dec. 26, 1911.

3 SHEETS-SHEET 1.

I. K. SHERO.

001mm: MIXER. APPLICATION FILED NOV. 23, 1910.

1 ,01 2,729 Patented Dec. 26, 1911.

mums-sum 2.

I. K. SHBRO.

CONCRETE MIXER.

' APPLIUATION FILED NOV. 23, 0. I 1,012,729. 1191 Patented Dec. 26,1911.

3 SHBBTSSHEET 3,

UNITED STATES PATENT OFFICE.

I ISAAC K. ysnnno, or oKEMAn, OKLAHOMA.

CONCRETE-,MIXER.

Specification of'Letters Patent.

Application filed November 23, 1910. Seria1No. 593,912.

-in a continuous manner to effectively mix the ingredients, the machinebeing-so arranged that the materials can be continuously fed into oneend of the drum andcont-inuously discharged from the other end, orintermittently fed and discharged, as required, the drum being equipped"1th an improved construction of end gate to control the discharge.

A further object of the invention is, to produce in a machine ofthischaracter, an improved construction and arrangement of I end gatefor the mixing drum, said end gate changed as required.

being associated with and connected to a discharge chute preferablyextending trans versely of the machine at the discharge end of the mixindrum, the chute being so mounted that it may be easily manipulated by asingle operator and so related to the end gate that the movement of thechute to its operative position will move theend gate away from thedischarge end of the mixing drum and permit the mixedmate-' rials toflow out.

The invention also has for its object a mixing 'drum freely suspendedfrom endless chains supported by sprockets on an actuating shaft, theweight of the drum and the contents thereof tending to securely hold thedrum inengagement with the chains whereby to impart to the drumthe-necessary rotary movement," a mixing drum which is provided with anovel and efficient arrangement of mixing blades and discharge sleeve atthe discharge end of the drum, and a mixing drum wh ch is supported inand by a tilting and adjustable frame, whereby the inclination of thedrum may be easily The invention also has for its object an improvedinitial mixing device forming part of the feed mechanism for the feedingdrum and embpdying an improved rotary elevator preferably operated inthe same manner as the mixing drum and from the same driving elements,the elevator being' adapted to receive the ingredients from the severalhoppers of the feeding device simultaneously to tumble the same in orderthat the ingredients may be at least partially mixed before they arepassed to the mixing- 'drum. And the invention also has for its objectto generally improve this class of de-.

PatentedDec. 26, 19 11.

vices and to render them more eflicient in operation and commercialldesirable.

With these and otherv o jects in view as will more fully appear as thedescriptionproceeds, the invention consists in certain constructions,arrangements and combinations-of the parts that I shall hereinafter,fully describe and claim.

For a full understanding of the inven- I tion, reference is to be had tothe following description and accompanying drawings,,in

which: a

Figure 1 is a side elevation of a concrete" mixing machine constructedin accordance with my invention; Fig. 2 is a top plan view of themachine; Fig. 3 is a vertical longi tudinal section thereof; and Fig. 4is a transverse sectional view of the lower portion of the dischargingapparatus.

Corresponding and like parts are referred to in thefollowing'description and indicated in all the views of the drawings by.the same referencecharacters.

The supporting framework of, my

hopper 6 and stone hopper 7. At one corner of the stone hopper 7 thecasing 4 is formed. with a right angularly shaped par- 10.5

tition 8 designed to produce a cement hopper provided at] its top with ahinged or 3 proved machine includes longitudinally exother door, thesand hopper being provided V at its top and at the rear end thereof witha'shield 11. v The materials are desi edIto be passed from the hoppersby a ceding dev ce 12 mounted upon a transversely extending. shaft 13journaled as'at 14. The

feeding mechanism'also includes a circular rotary elevator -20-formedwith a flanged I partition5 dividing the easing into asand fnom thecross bar 34 and which are con periphery and with channeledsides inwhich buckets 21 are secured, the buckets being with trunnions 27mounted in a bearingbracket 28 secured to and extending upwardly fromthe cross bar 19. A spout 29 is connected to the rear edgeof the casing4 and is adapted to extend into the receiving end of a preferablytapering mixing drum 30, the larger end of the drum being the receivingend thereof. The spout 29 is mounted above the casing/l and within therotary elevator20, and hence as the latter rotates, the ingredients willbe at least partially mixed in'the buckets 21 and will be dropped ontothe spout 29 and conveyed by the latter into the mixing drum 30. v

The mixing drum 30 is formed in the present instance with two channeledcircumferentially extending tracks 31 around which endless chains 31extend to directly support the drum and to rotate the same about itslongitudinal axis as the chains travel. These chains are in turnsupported by and work on sprocket wheels 32 which are secured to alongitudinally extending shaft 33. This shaft is journaled near one endin a cross bar 34 which extends transversely and which has at its endstrunnions 35 mounted for a turning movement in verticalstandards 36secured at their lower ends to the sills 1 Connected to the cross bar34'are two longitudinally extending parallel side .bars 37 which projectforwardly nected near their-forward ends by a cross bar-38, the crossbar "34, longitudinal bars 37 and'cross bar 38 forming a tiltablesuspension frame for the drum. The longitudinal bars 37 of this framehave forwardly projecting ends 39 which embracethe adj acent posts 40 ofa derrick which is mounted on the framework near the front end of thelatter and which will be hereinafter more specifically described, saidadjacent posts 40 being formed with apertures 41 designed to receive asupporting rod 42 upon which the forwardly projecting ends 39 of thebars 37 are adapted to rest. It will thus be seen that by varying thevertical por. sition of the supporting rod 42, the drum supporting framemay be tilted and held atdifferent inclinations so as to give more orless inclination to the mixing drum 30.

The drum shaft 33 is connected at its rear end to the shaft 25 beforementioned, by means .of a universal joint 43 so arranged that the shaft33 may be tilted, as required, without materially changing the pitch orposition of the shaft 25. A bevel gear wheel 44 is secured to thedrum'shaft 33, said gear wheel meshing with a bevel pinion 45 secured tothe inner end of a relatively short transverse shaft 46. The shaft 46 isjournaled in a bearing 47 secured upon a ledge 48 formed on one of thelongitudinal bars 37. A pulley or band wheel 49 is secured to the outerend of the transverse shaft 46 and a driving belt 50 extends over thesaid pulley and also around a pulley 51 mounted on the driving shaft 51?ofa motor 52 of any desired type, either electric, gasolene, or

steam. A sprocket wheel 53 is also secured to the transverse shaft 46and is connected by a chain 54 to a sprocket wheel 55 on thefeedingshaft 13. The mixing drum 30 contains any desired number ofmixing blades 56, the same being arranged in three spirally extendingrows in the present instance, and being of angular formation riveted orotherwise secured to the drum, the present arrangement producing asubstantially continuous spiral feeding and mixing means from thereceivin to the discharge end of the drum. At the discharge end of thedrum the same is provided on its interior with a concave and rearwardlytapering trough 57 adapted to catch the materials as they are fed tothis end of the drum in the rotary movement thereof and discharge thesame. An end gate 58 is mounted at the discharge end of the mixing drum30, said'end gate in the present instance being in the-form of a plateor disk, as shown, and

being supported by springs 59 that are. secured to a laterally disposeddischarging andtransferring chute 60, This chute is formed withdepending arms 61' by which it is .'tiltably mounted intermediate of itsends on a rod 62 secured to and supported by transverse sills 63., Thechute is provided at one end with a handle 64 by which it may bemanipulated, and it will be understood that when the chute is in itsnormal inoperative andmore nearlyhorizontal position, the end gate willbe positioned across. the

discharge end of the mixing drum so as to I retain the materials thereinas long as required. Upon tilting the chute 60 by rais ing up upon thehandle 64, the chute will be moved to a more inclined and operativeposition and at the same time, as the end gate is carried by the chute,the end gate will be moved away from the discharge end of the mixingdrum tc permit the materials to flow out of the latter. It is obviousthat the chute may discharge the materials into any desired receptacle,,as for instance into an elevating and dumping bucket, such as that Byforming the gate 58 considerably larger than the discharge end of themixing 7 drum 30 and connecting it to the chute 60 by the springs 59,the gate will be retained in closed position no matter-to what extentthe discharge end of the drum may be adjusted by means of the pins 42and apertures 4.

A sprinkling pipe 103 extends along one side of the mixing drum 30,being supported preferably by the standards l8 and rearmost derrickposts 40, the spray pipe turning into the receiving end of the drum tosprinkle the contents thereof. The pipe is provided with a c ntrollingvalve 104 of any desired vtype, nd a hose 105 is connected to the valvedend of the sprinkling pipe 103, being intended to convey ter to the pipefrom any suitable source of supply, (not shown).

From the foregoing description 'in connection with the accompanyingdrawing, the operation of my improved concrete mlxing machine will beapparent. In the practical use of the apparatus, the materials to bemixed are fed into the hoppers and are passsed therethrough into therotary elevator 20, from whence they are dropped onto the spout 29 andfed by the latter into the receiving end of the mixing drum 30. Theweight of the drum and its contents insures the rotation of the drum asthe shaft 33 rotates, and the ingredients will be thoroughly commingledby the action of the blades 56, being sprayed with water from the pipe103. The concrete may then be discharged either continuously from thedrum onto the laterally disposed discharg-' ing or transferring chute 60and be trans ferred thereby into wheelbarrows or'pther receptacles, orif desired the discharge of the concrete from the drum may beintermittent and controlled by the operator at the I handle 64.

Having thus described the invention, what is claimed as new is:

1. In a concrete mixing machine, a su porting frame including verticalstandar s, a bearing carried by said standards and swinging verticallythereon, a shaft mounted intermediate its ends in said bearing,

chain wheels carried by said shaft at opposite sides of said bearing, amixing drum, chains engaging the chain wheels and extending around themixing drum, and means for vertically adjusting said shaft to cause itto swing with said bearings.

52. In a concrete mixing machine, a supporting frame, a IIllXlIlg' drum,means for rotatlng sa1d drum, a gate operating to close the wav thedischarge end of said drum, a chute mounted to swing beneath thedischarge end of said drum, and yieldable connecting means betweensaid'chute andgate.

3. In a concrete mixing machine, a su porting frame including verticalstandar s, a bearing member carried by said standards and swingingvertically thereon,. a transverse member having a bearing, longitudinalbars connecting said bearing member and transverse member, a shaftmounted intermediate its ends in said bearings, chain wheels carried bysaid shaft at opposite sides of said bearing member, a mixing drum, andmeans for vertically adjusting said transverse member and the shaftsupported thereby to change the inclination of said drum. v

4.. In a concrete mixing machine, a framework, standards extendingupwardly from the framework, across bar mounted to turn in saidstandards, side bars connected at one end to said cross bar, postsextending upwardly from the framework, another cross bar connected tosaid side bars near the other ends of the latter, a rod adapted to be.

passed through said posts at different elevations and arranged tosupport the last named ends of the sidebars, a shaft journaled in saidcross bars, sprocket wheels carried by said shaft on opposite sides ofthe first-named cross bar, chains passing around said sprocket wheels,and a mixing drum suspended by said chains.-

5. In a concrete mixing machine, a framework, standards extendingupwardly from the framework, a cross bar mounted to turn in saidstandards, side bars connected at one end to. said cross bar, postsextending upwardly from the framework, another cross .bar connected tosaid side bars near the other ends of the latter, a rod adapted to bepassed through said posts at different elevations and arranged tosupport the last named ends of the side bars, 'a shaft journaled in-saidcross bars, sprocket wheels car.- ried by said shaft on opposite sidesof the first-named cross bar, chains passing around said sprocketwheels, a mixing. drum supported by said chains, a gear wheel securedto'said shaft, a transverse shaft supported on one of the side bars, apinion meshin with said gear wheel and connected to sai transverseshaft, a motor, and a driving connection between said motor and thetransverse shaft.

In testimony whereof, I afi my signature in presence of two witnesses.

ISAAC K. SHERO.- 1 8.

Witnesses: I

' C. W. MOULEX,

W. S. ATTERBEnRY.

